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More Printed Circuit boards…

I became very excited after having received a Freescale smart car kit. Although I have yet to get the camera mounted and make it follow a line, I have been playing with the microcontroller board that came with it, and the online IDE/compiler tool chain for it.

So excited that I just had to build my own boards for it…

There are various boards out there for doing various photographic control functions but there are no one-does-nearly-all, kitchen-sin, Swiss army knife, hackable photo controllers to be had. The boards I made will be the test beds for prototyping the various functions I intend to include on a multipurpose photo control board. More on that later as things progress.

The device at the heart of these proto boards is the Freescale Kinetis KL25Z in the 64-pin QFP package. There is a header for a Nordic Semiconductor nRF224L01+ 2.4GHz data transceiver module that’s are commonly available on eBay. There’s also a header for a Nokia 5110 type LCD display and for programming. All the pins are brought out to a hole and a little general purpose prototype area. Total cost for ten boards measuring 50mm x 50mm was $15, where $5 of it was for shipping (the vendor was Seeed Studio, for those interested; they have extremely good prices…).

I received an email this morning that the boards have been shipped back to me. Now the excruciating wait for them to arrive…

Below are the schematic and layout.

KL25Z-64QFP-sch

KL25Z-64QFP-brd

Here are the Eagle and Gerber files: MiniKL25Z-64QFP

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Posted in diy and Specialties by david on September 25th, 2013 at 8:03 pm.

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